I had been using UBCD 4 FreeDos to fix the MBR on new drives that had not had Windows installed because our ZenWorks partitioning and imaging process did not seem to affect the MBR. On UBCD 4, I would go to T:\dosapps\fdisk and run fdisk /mbr without problems. I would have continued this process but one of our newer model PCs had problems loading FreeDos and did not map a T: drive. So far, I have not been able to find a similar solution with UBCD 5 because it loads Free FDISK whenever the fdisk command is executed and that only works with FAT32 (and does not have a MBR section from what I can tell).

So far, I have not been able to find a similar solution with UBCD 5 because it loads Free FDISK whenever the fdisk command is executed and that only works with FAT32 (and does not have a MBR section from what I can tell).

You can always boot into Parted Magic an run TestDisk, and choose the "[ MBR code ]" submenu.

That was the first process I tried. Unfortunately, even "fdisk /?" loads a program called Free FDISK rather than using the one supplied with FreeDOS.

That's very odd. Even if you select Freedos Fdisk directly from the UBCD menu instead of selecting UBCD DOS first and then going to the prompt, you should still have the option to run the command.

If you get into fdisk, then answer "yes" to the fat32 initial question. Once inside fdisk, press <esc> to exit fdisk, and you should return to the prompt.

If you got into UBCD DOS options as I described above, you shouldn't select "DOS apps" -> Freedos Fdisk. Instead, you select "exit" to get to the prompt, and then run "fdisk /?".

If you somehow got to the prompt and you run "fdisk /?", you must receive the help, not the UI. If that's not happening, then you should double check your ubcd503.iso checksum and the burned CD. This is also valid even if you already solved the problem for this particular HDD.

Something else that seems somehow strange to me is that you mentioned a "free fdisk" that is different from the Freedos Fdisk program. Although there are several "fdisk-type" programs included in UBCD 5.0.3, I don't know which specific "fdisk version/program" you are seeing displayed when you run "fdisk /?".

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